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detection of a novel francisella in dermacentor reticulatus: a need for careful evaluation of pcr-based identification of francisella tularensis in eurasian ticks.francisella tularensis, the causative agent of tularemia, has been detected in ixodid ticks in some regions of north america, europe, and asia. in the present study, 245 dermacentor reticulatus, 211 ixodes ricinus, and 194 haemaphysalis concinna adults from hungary were tested for the presence of f. tularensis by polymerase chain reaction (pcr) assays based on 16s ribosomal rna (16s rdna) and t-cell epitope of a francisella membrane protein (tul4). no francisella-specific amplification products ...200818945184
investigation of the ecology of francisella tularensis during an inter-epizootic period.abstract a 1-year study of the ecological cycle of francisella tularensis was performed in an enzootic area during an inter-epizootic period. the study was based on multiple sampling of all major constituents of the disease cycle. seroprevalence of tularemia in the european brown hare (lepus europaeus) population was 5.1% (10/197) with low antibody titers (1/10 and 1/20), and f. tularensis ssp. holarctica was isolated from four hares. f. tularensis was not detected in the 38 common voles (microt ...201021142970
mosquitoes (diptera: culicidae), in contrast to ticks (acari: ixodidae), do not carry francisella tularensis in a natural focus of tularemia in the czech republic.in total, 9,167 mosquitoes (aedes spp.) and 1,987 ixodid ticks--1,423 dermacentor reticulatus (f.), 504 ixodes ricinus (l.), and 60 haemaphysalis concinna koch--were examined in an active enzootic focus (floodplain forest-meadow ecosystem) of tularemia in south moravia. czech republic. although no f. tularensis was detected in mosquitoes or h. concinna, 30 isolates were recovered from d. reticulatus (infection rate, 2.1%) and 1 isolate from i. ricinus (infection rate, 0.2%). ixodid ticks, especi ...19979439120
frequent isolation of francisella tularensis from dermacentor reticulatus ticks in an enzootic focus of tularaemia.a total of 924 questing dermacentor reticulatus (fabricius), 504 ixodes ricinus (l.), sixty haemaphysalis concinna koch and 718 mosquitoes (aedes spp.) were examined in a floodplain forest ecosystem during the 1994-95 outbreak of tularaemia in south moravia, czech republic. francisella tularensis was not isolated from h.concinna ticks or aedes spp. mosquitoes, whereas twenty-one isolates were recovered from the other haematophagous arthropods. dermacentor reticulatus revealed a significantly hig ...19968887334
prevalence of ticks infected with francisella tularensis in natural foci of tularemia in western slovakia.the prevalence of ticks infected with f. tularensis was followed during a systematic surveillance in endemic area of tularemia in western slovakia over the years 1984-93. ticks were collected from vegetation in localities of podunajské biskupice, in the vicinity of the capital of slovakia, bratislava, near the river danube. in total 6033 ticks, mostly adults of dermacentor reticulatus and ixodes ricinus (4994 and 1004, respectively) and 35 nymphs of haemaphysalis concinna, were examined for the ...19958549717
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